Superfund / California
Koppers Co., Inc. (Oroville Plant)
Oroville, Butte County, California
This site remains on the final NPL. The engineered cleanup (its "remedy") was physically completed on 09/04/2003, and the site stays listed while monitoring confirms the remedy works.
| EPA ID | CAD009112087 |
| Status | NPL Site |
| HRS score | 33.73 |
| Proposed | 09/08/1983 |
| Listed | 09/21/1984 |
| Construction complete | 09/04/2003 |
| Deleted | - |
| Coordinates | 39.47083, -121.56430 |
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